retningvektorer
Retningsvektorer, often translated as direction vectors, are fundamental concepts in mathematics and physics. They are vectors that indicate a direction in space without specifying a magnitude. Think of them as arrows that point somewhere but have no length. Mathematically, a direction vector is typically represented by an ordered set of numbers, such as (a, b) in two dimensions or (a, b, c) in three dimensions. These numbers represent the components of the vector along the coordinate axes.
The key characteristic of a direction vector is that any non-zero scalar multiple of it represents the
Direction vectors are crucial for describing lines and planes in geometry. A line can be defined by